Umbrella base weight bag



FIG. 1 is a top perspective view of an umbrella base weight bag, according to the present design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a right side view thereof, the left side view being a mirror image thereof;

FIG. 4 is a back side view thereof;

FIG. 5 is a front side view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for an umbrella base weight bag, as shown and described. 